The week in pictures: 23 March 2012

The UCLA Quidditch team practises in Los Angeles, California. In the Harry Potter books, Quidditch players fly through the air on their broomsticks over an oval-shaped pitch and attempt balls through elevated ring-shaped goals. In the real world, players attempt to throw a semi-inflated ball, similar to a rugby ball, through their opponents' hoops while running with broomsticks between their legs. More than 200 universities and colleges across the USA are currently members of the International Quidditch Association...Picture: Incredible Features / Barcroft Media